Umthetho Ohm lithi wamanje ngokusebenzisa umqhubi phakathi amaphuzu amabili ngokuqondile wakhona voltage ngaphesheya amaphuzu amabili bese inhlukanozigaba ukuze ukumelana umqhubi, lelokuthi: Lapho engikhona - amandla zamanje kagesi, U - voltage, R - ukumelana umqhubi
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